Giant Enhancement of Upconversion Fluorescence of NaYF4:Yb3+,Tm3+ Nanocrystals with Resonant Waveguide Grating Substrate

Lin, Jian Hung; Liou, Hao Yu; Wang, Chen Dao; Tseng, Chun Yen; Lee, Ching-Ting; Ting, Chu Chi; Kan, Hung-Chih; Hsu, Chia Chen

doi:10.1021/ph500427k

Cited by 61 publications

(43 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By embedding NaYF 4 :Yb 3+ ,Tm 3+ nanocrystals into the top cladding layer of a resonant waveguide grating structure, the author demonstrated that the UC fluorescence of Tm 3+ ions can be enhanced by a factor of up to 10 4 . Both the coupling the excitation light with a guided mode of the resonant waveguide grating (RWG) structure and the fluorescent light with a second guided mode are attributed to the observed giant UC fluorescence enhancement, as shown in Figure 17 [114].…”

Section: Pef From Rare-earth Doped Nanoparticlementioning

confidence: 99%

Recent Progress on Plasmon-Enhanced Fluorescence

et al. 2015

View full text Add to dashboard Cite

Abstract:The optically generated collective electron density waves on metal-dielectric boundaries known as surface plasmons have been of great scientific interest since their discovery. Being electromagnetic waves on gold or silver nanoparticle's surface, localised surface plasmons (LSP) can strongly enhance the electromagnetic field. These strong electromagnetic fields near the metal surfaces have been used in various applications like surface enhanced spectroscopy (SES), plasmonic lithography, plasmonic trapping of particles, and plasmonic catalysis. Resonant coupling of LSPs to fluorophore can strongly enhance the emission intensity, the angular distribution, and the polarisation of the emitted radiation and even the speed of radiative decay, which is so-called plasmon enhanced fluorescence (PEF). As a result, more and more reports on surface-enhanced fluorescence have appeared, such as SPASER-s, plasmon assisted lasing, single molecule fluorescence measurements, surface plasmoncoupled emission (SPCE) in biological sensing, optical orbit designs etc. In this review, we focus on recent advanced reports on plasmon-enhanced fluorescence (PEF). First, the mechanism of PEF and early results of enhanced fluorescence observed by metal nanostructure will be introduced. Then, the enhanced substrates, including periodical and nonperiodical nanostructure, will be discussed and the most important factor of the spacer between molecule and surface and wavelength dependence on PEF is demonstrated. Finally, the recent progress of tipenhanced fluorescence and PEF from the rare-earth doped up-conversion (UC) and down-conversion (DC) nanoparticles (NPs) are also commented upon. This review provides an introduction to fundamentals of PEF, illustrates the current progress in the design of metallic nanostructures for efficient fluorescence signal amplification that utilises propagating and localised surface plasmons.

show abstract

Section: Pef From Rare-earth Doped Nanoparticlementioning

confidence: 99%

Recent Progress on Plasmon-Enhanced Fluorescence

et al. 2015

View full text Add to dashboard Cite

show abstract

“…During the last years, plasmon‐enhanced upconversion processes have emerged as a research line focused on improving the conversion of NIR to visible light at nanometric dimensions. To that end, the plasmonic resonances provided by different metallic configurations have been exploited to boost both the incident electromagnetic field intensity (providing absorption enhancement) and/or the radiative emission rate (yielding emission enhancement) . Plasmon‐enhanced upconversion has been achieved through different strategies such as core–shell NPs, waveguides, pillar or hole arrays, prisms and rods, or periodically patterned metallic structures, among others.…”

Section: Plasmon‐enhanced Luminescence In Optically Active Ferroelectmentioning

confidence: 99%

Hybrid Plasmonic–Ferroelectric Architectures for Lasing and SHG Processes at the Nanoscale

et al. 2019

View full text Add to dashboard Cite

develop novel nanophotonic devices with innovative functions for light generation and control. Indeed, the development of coherent light sources with sub-wavelength confined modes is a flourishing area that can yield a revolution in several fields, including physics, chemistry, materials science, biology, and/or imaging and information technologies. [13][14][15][16] In this review, we discuss the progress on the fabrication and performance features of light sources operating at the nanoscale, which can be attained by the interaction of localized surface plasmons (LSP) with optical gain dielectric media. The optical gain is provided by functional ferroelectric platforms (either by stimulated emission or by nonlinear (NL) frequency conversion processes), which in turn are used as templates for the deposition of metallic arrangements. Two types of sources with sub-diffraction spatial confinement are presented: plasmon-assisted solid-state nanolasers, based on the interaction between metallic nanostructures and optically active rare earth (RE 3+ ) doped ferroelectric crystals, and NL radiation sources based on quadratic frequency mixing mechanisms, that are enhanced by means of LSP resonances.Ferroelectrics are nowadays strong actors in the area of light generation and control. In the context of this report, the relevance of employing ferroelectric crystals as optical functional platforms is multiple. On one hand, the presence of a reversible spontaneous polarization in the ferroelectric phase allows to engineer ferroelectric domain patterns with different photonic functionalities. [17][18][19][20] On the other hand, the noncentrosymmetric crystal structure of ferroelectrics enables the generation of quadratic frequency conversion processes, which makes these systems useful as frequency doublers and optical parametric oscillators. [21,22] Further, the possibility of some ferroelectric crystals to host luminescent trivalent RE 3+ ions, from which laser action can be achieved, is an additional advantage exploited in the context of this work. [23] In fact, some of the materials that will be the subject of discussion in this report constitute true solid-state lasers due to the incorporation of optically active ions such as Nd 3+ or Yb 3+ during the crystal growth. Finally, the presence of surface charges on ferroelectrics is a key factor that allows ferroelectric surfaces to act as templates to assemble different type of nanostructures Coherent light sources providing sub-wavelength confined modes are in ever more demand to face new challenges in a variety of disciplines. Scalability and cost-effective production of these systems are also highly desired. The use of ferroelectrics in functional optical platforms, on which plasmonic arrangements can be formed, is revealed as a simple and powerful method to develop coherent light sources with improved and novel functionalities at the nanoscale. Two types of sources with subdiffraction spatial confinement and improved performances are presented: i) plasmon-assisted solid-sta...

show abstract

“…113 In particular, enhancing upconversion using surface plasmons and photonic structures is a topic under intense investigation because of the potential to achieve large enhancement. [114][115][116][117][118][119] Different strategies might be combined in a system to optimize upconversion efficiency and minimize the overheating problem for deep-tissue applications.…”

Section: Discussionmentioning

confidence: 99%

Near-infrared photochemistry at interfaces based on upconverting nanoparticles

Butt

2017

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Near-infrared (NIR) light is better suited than ultraviolet (UV) light for biomedical applications because it penetrates deeper into tissue and causes less photodamage to biological systems. The use of NIR light to control biointerfaces has attracted increasing interest. Here, we review NIR photoreactions at interfaces based on upconverting nanoparticles (UCNPs). UCNPs can convert NIR light to UV or visible light, which can then induce photoreactions of photosensitive compounds. This process is referred to as UCNP-assisted photochemistry. Recently, we and others demonstrated UCNP-assisted photochemistry at interfaces to control interfacial properties of nano-carriers, implants, emulsions, and cells. We introduce the fundamentals of UCNP-assisted photochemistry at interfaces, highlight its potential applications, and discuss remaining challenges.

show abstract

Giant Enhancement of Upconversion Fluorescence of NaYF₄:Yb³⁺,Tm³⁺ Nanocrystals with Resonant Waveguide Grating Substrate

Cited by 61 publications

References 38 publications

Recent Progress on Plasmon-Enhanced Fluorescence

Recent Progress on Plasmon-Enhanced Fluorescence

Hybrid Plasmonic–Ferroelectric Architectures for Lasing and SHG Processes at the Nanoscale

Near-infrared photochemistry at interfaces based on upconverting nanoparticles

Contact Info

Product

Resources

About